#define afs_bufferpages bufpages
+#undef gop_lookupname
+#define gop_lookupname(fnamep,segflg,followlink,compvpp) lookupname((fnamep),(segflg),(followlink),NULL,(compvpp))
+
#define osi_vnhold(avc,r) do { \
if ((avc)->vrefCount) { VN_HOLD((struct vnode *)(avc)); } \
else osi_Panic("refcnt==0"); } while(0)